Improvement in pipe - couplings



' NITnD STATES A. E. BARNARD, OF CLEVELAND, OHIO.

, IMPROVEMENT IN PIPE COUPLINGS.

i n*-.`- 4Specification forming part of Letters Patent No. 48,038, datedJune 6, 1865.

To all whom it may concern,.-

Be it known that I, A; E. BARNARD, of Cleveland, in the county ofCuyahoga and State of Ohio, have invented certain new and usefulImprovements in HoseCouplings; and I do hereby declare that thefollowing is a full and complete description of the construction andoperation of the same, reference being had to the accompanying drawings,making a part of this specification, in whic Figures I and 2 representthe sections of the coupling detached from each other. Fig. 3 is aperspective view of the coupling. Fig. #lis a longitudinal section ofthe same.

Like letters of referenccldenote like parts in the different views.

My improvement relates to the manner of forming a coupling, whereby aperfectlyeclose connection or joint is made by clamping the sections ofthe coupling together, which will be described as follows:

A and B represent the sections of the coupling detached from each otherin Figs. l and 2 that are coupled together in Fig. 3, of which Fig. 4 isa sectional view. One end of the sections has screws on the outside, asat a and b, by which the sections are connected to the hose. The innerend of the section A is formed with lugs or projections c and d,cxtending outward opposite each other, as seen in Figs. l and 4. Thesection B is formed with an enlarged part, B', on one side of whichthere is a boss, l), bored out on the underside, as at D. Inside of theboss there is a cam, F, which is turned by a wrench for that purpose,put into the opening F. The cam is kept in place as it is turned by apin,g, in th e boss, tting into a groove, h, in thc cam, as indicated bythe dotted lines in Fig. 2. The enlarged part B of the section B isturned out, forming a chamber to receive the section A, and making ashoulder, f, which is recessed out still more, as indicated by thedotted lines j" in Figs. 2 and 4, on which a washer or packing, J isplaced, the packing fitting closely round into the recess, as shown inFig. 4. The recess prevents the packing from dropping out. Opposite theopening D in the boss there is an opening, e, in the part B of thesection, into which one of thelugs of the sectionAis placed inconnecting the sections together. Oneside of the cam F is scarfed off,as at e', and

from the point c' to c, round in the direc. tion ofthe arrow, it isgradually curved inward,

forming the cam of such a shape that it will tighten in the desiredmanner on the lug of the section Awhen it is turned down uponit.

In coupling the sections A and B: together the cam must be turned sothat the scarf e will be in the position indicated by the dotted line x,when the section A can be introduced into the chamber' of the section B.One of the lugs, as c, must be placed in the opening e first, when, asthe other side of the section is put in place, it tightens down on thepacking, being tighter at the side where it is iirst put in at, by thelug c pressing against the upper part of theY opening e, until the camis turned or clamped down on the lug cl, when the end of the sectionwill be pressed down equally close all round, forming a firm compactjoint or coupling, which can most readily be disengaged at any time orcoupled together by simply turning the cam by the wrench either way,tightening or loosening the cam on the lug. By turning the cam roundtill t-he pin 'i comes against the projection j lthe scarf e is broughtround, so that the sections can be uncoupled, and in the same positionthe cam must be when the sections are put together, when by turning thecam round in the opposite direction, until inthe position seen in Fig.3, the sections are firmly fastened or coupled together. i

What I claim as my improvement, and desire to secure by Letters Patent,is-

l. The cam F and boss D, in combination with the lugs d c and opening e,substantially as and for the purpose set forth.

2. The recessed chamber f', packing J, in combination with the coupling,substantially as and for the purpose set forth.

A. E. BABNARD. Witnesses: l

W. H. BUR-reinen, J HOLMES.

